	
	package servlet.grade;
	
	import java.io.IOException;
	import javax.servlet.ServletException;
	import javax.servlet.http.HttpServlet;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.http.HttpServletResponse;
	import service.GradeManagner;
	import enitys.Grade;
	
	public class UpdateGrade extends HttpServlet {
	
		/**
		 * 
		 */
		private static final long serialVersionUID = 1L;

		/**
		 * Constructor of the object.
		 */
		public UpdateGrade() {
			super();
		}
	
		
	
		/**
		 * The doGet method of the servlet. <br>
		 *
		 * This method is called when a form has its tag value method equals to get.
		 * 
		 * @param request the request send by the client to the server
		 * @param response the response send by the server to the client
		 * @throws ServletException if an error occurred
		 * @throws IOException if an error occurred
		 */
		public void doGet(HttpServletRequest request, HttpServletResponse response)
				throws ServletException, IOException {
				int id=Integer.parseInt(request.getParameter("id"));
				String scroe=request.getParameter("grade");
				boolean Result;
				Grade grade=new Grade();
				grade.setS_id(id);
				grade.setGrade(scroe);
				try {
					Result=GradeManagner.getInstance().Updategrade(grade);
					if(Result){
							request.setAttribute("message", "修改成功");
						}else{
							request.setAttribute("message", "修改失败");
						}
						//页面跳转
				request.getRequestDispatcher("/servlet/GradeAllInfo").forward(request, response);
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			
		}
	
		/**
		 * The doPost method of the servlet. <br>
		 *
		 * This method is called when a form has its tag value method equals to post.
		 * 
		 * @param request the request send by the client to the server
		 * @param response the response send by the server to the client
		 * @throws ServletException if an error occurred
		 * @throws IOException if an error occurred
		 */
		public void doPost(HttpServletRequest request, HttpServletResponse response)
				throws ServletException, IOException {
					doGet(request,response);
		}
	
	}
